CN105336903B - A kind of paper roll core preprocess method of winding lithium battery diaphragm - Google Patents
A kind of paper roll core preprocess method of winding lithium battery diaphragm Download PDFInfo
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- CN105336903B CN105336903B CN201510856916.1A CN201510856916A CN105336903B CN 105336903 B CN105336903 B CN 105336903B CN 201510856916 A CN201510856916 A CN 201510856916A CN 105336903 B CN105336903 B CN 105336903B
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- Prior art keywords
- baking
- paper roll
- roll core
- winding
- temperature
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
- H01M50/403—Manufacturing processes of separators, membranes or diaphragms
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
- H01M10/0587—Construction or manufacture of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Battery Electrode And Active Subsutance (AREA)
- Replacement Of Web Rolls (AREA)
Abstract
The present invention shifting to an earlier date pretreatment mode by one kind to winding refill, reduces after refill winding generate move back cylinder due to the weather temperature difference.This method is simple and efficient, and greatly reduced company customer complaint and cost caused by film roll moves back cylinder.The purpose of the present invention is to provide a kind of paper roll core preprocess methods of winding lithium battery diaphragm, include the following steps：A, it toasts：Paper roll core is put into baking oven and is toasted, baking temperature be 40~150 DEG C, baking time be 5~for 24 hours；B, cooling：Paper roll core after baking is taken out, and is used after being cooled to room temperature.Because baking temperature is excessively high or the time is too long can cause to damage to core, and baking temperature is too low or the time is too short, falls flat.
Description
Technical field
The invention belongs to the production field of lithium battery diaphragm, more particularly to a kind of paper roll core of winding lithium battery diaphragm is located in advance
Reason method.
Background technology
Currently with environmental problem getting worse, and traditional fuel automobile is one of main pollution source.New-energy automobile
Industry is always the industry that automobile industry or even national governments are keen to investment, data lithium battery address prediction, the electronic vapour of the year two thousand twenty
Vehicle yield reaches 13,140,000, is 5.5 times in 2010.Wherein, plug-in hybrid-power automobile yield can increase by 35 times and reach
1400000, pure electric automobile yield can reach 750,000, increase by 75 times.
In recent years, with the fast development of lithium electricity industry, domestic lithium electric separator production technology has also welcome a quickly hair
The period of exhibition.Four big materials one of of the diaphragm as lithium battery, also have been greatly developed opportunity.In the production system of lithium battery
During making, to adapt to the demand of production, battery producer needs to wind using paper roll core to the separator product of certain specifications, demand
Quantity is also increasing.And the client distributed areas of our company are wider, and paper roll core also has certain moisture, directly uses
Paper roll core is wound on Vehicles Collected from Market, during transport due to weather temperature difference etc., causes the moisture of paper roll core
Variation in turn results in the outer diameter variation of paper roll core, and therefore film roll also generates the probability for moving back cylinder, this not only compromises company
Fame also increases cost input, therefore some core manufacturers apply polymer and its other party also by paper roll core outer layer
Method reduces the dimensional contraction rate of paper roll core.
Invention content
The present invention shifting to an earlier date pretreatment mode by one kind to winding refill, is generated because of the weather temperature difference after reducing refill winding
Move back cylinder.This method is simple and efficient, and greatly reduced company customer complaint and cost caused by film roll moves back cylinder.
The purpose of the present invention is to provide a kind of paper roll core preprocess methods of winding lithium battery diaphragm, including following step
Suddenly：
A, it toasts：Paper roll core is put into baking oven and is toasted, baking temperature be 40~150 DEG C, baking time be 5~
24h；
B, cooling：Paper roll core after baking is taken out, and is used after being cooled to room temperature.
Because baking temperature is excessively high or the time is too long can cause to damage to core, and baking temperature is too low or the time is too short,
It falls flat.
Preferably, in the step a, baking temperature is 50~70 DEG C.
Preferably, in the step a, baking time is 7~12h.
Preferably, in the b step, cooling condition selection is carried out in enclosure space.Paper roll core cools down under enclosed environment
When progress, it is possible to reduce because temperature reduces, and the water vapour of air is caused to congeal into droplet, improve the moisture of paper roll core.
Preferably, the enclosure space is unheated baking oven.
Preferably, after the completion of cooling for 24 hours within to use.
Preferably, it to be used within 12h after the completion of cooling.
Preferably, in the step a, paper roll core is placed on cart, is facilitated and is toasted in push-in baking oven.
Preferably, the cart further contains metal tube, and the paper roll core is sleeved on metal tube.
Preferably, moisture ＜ 5% after the paper roll core baking.
Specifically, the above-mentioned technical purpose of the present invention can be achieved through the following technical solutions：
A, it toasts：Paper roll core is placed on cart, is pushed into baking oven and is toasted.
B, cooling：After refill after baking is taken out and puts it into another unheated baking oven and is cooled to room temperature
It uses.
In above-mentioned steps to the key that refill is heat-treated in advance be control baking temperature, baking time, cooling condition and
Usage time etc..
The present invention has the following advantages：
(1) present device/technology maturation, it is easy to operate, core can be toasted with quantitative choosing.
(2) effective to improve because what refill shrinkage band was come moves back cylinder, company's customer complaint is reduced, production cost is reduced.
Specific implementation mode
The present invention is further illustrated for following example.
Embodiment 1
It is pretreated to winding refill that steps are as follows：
A, it toasts：Paper roll core is mounted on the metal tube of cart, promote baking oven, and set 60 DEG C of baking temperature and when
Between 8h, start to toast.
B, cooling：Paper roll core after baking is released into baking oven, another unheated baking oven is put into and is cooled to room temperature, is taken out
It can come into operation.
Embodiment 2
It is pretreated to winding refill that steps are as follows：
A, it toasts：Paper roll core is mounted on the metal tube of cart, promote baking oven, and set 40 DEG C of baking temperature and when
Between for 24 hours, start to toast.
B, cooling：Paper roll core after baking is released into baking oven, another unheated baking oven is put into and is cooled to room temperature, is taken out
It can come into operation.
Embodiment 3
It is pretreated to winding refill that steps are as follows：
A, it toasts：Paper roll core is mounted on the metal tube of cart, baking oven is promoted, and set 150 DEG C of baking temperature and
Time 5h starts to toast.
B, cooling：Paper roll core after baking is released into baking oven, another unheated baking oven is put into and is cooled to room temperature, is taken out
It can come into operation.
Embodiment 4
75mm wide is chosen, 8mm thickness, three cun of paper roll cores of mean outside diameter use different temperatures to toast 8h respectively, and baking is completed
After put it into confined space cooled to room temperature, until 2 hours after room temperature take out paper roll core, obtain mean outside diameter such as the following table 1
It is shown.
Table 1
With doing simulation temperature difference experiment after the winding of the baking condition of table 1 under identical conditions, 40 DEG C of film roll can move back cylinder, and 90
DEG C and the cracking phenomenon of refill after the baking of above film roll, be unfavorable for the use of refill, it is contemplated that the reason of economy and benefit,
Within the scope of 50~70 DEG C of currently preferred baking temperature, no matter mean outside diameter is poor, moisture and appearance, effect is most
It is good.
Embodiment 5
75mm wide is chosen, 8mm thickness, three cun of paper roll cores of mean outside diameter 93.03mm use 60 DEG C of progress of different time respectively
Baking puts it into confined space cooled to room temperature after the completion of baking, until 2 hours after room temperature take out paper roll core, is put down
Equal outer diameter is as shown in table 2 below.
With simulation temperature difference experiment is done after the winding of the baking condition of table 2 under identical conditions, the film roll of 4h, 5h, 6h can move back cylinder,
And after the baking processing of 12h or more, the cracking phenomenon of paper roll core appearance.The reason of in view of economy and benefit, the present invention are excellent
It is no matter best in mean outside diameter difference and moisture, effect within the scope of 7~12h of baking time of choosing.
Comparative example
Using the baking condition for implementing 1, wherein comparative example 1 does not cover metal tube, is placed directly on cart and toasts.Comparative example 2
There is set metal tube barbecue, then compares its moisture and paper roll core appearance is as shown in the table：
| Comparative example | Method characteristic | Moisture | Paper roll core appearance |
| 1 | Do not cover metal tube | 8% | Slight cracking |
| 2 | There is set metal tube | 3% | Appearance is unchanged |
As seen from the above table, paper roll core is sleeved on metal tube, is uniformly heated, its moisture can be substantially reduced and contained
Amount, and reaching under same effect, baking time can be shortened, reduce baking temperature, fully avoid paper roll core cracking existing
As.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is to combine specific preferred embodiment to institute of the present invention
The further description of work is, and it cannot be said that the specific implementation of the present invention is confined to these explanations.All spirit in the present invention
With within principle made by all any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention.
Claims (5)
1. a kind of paper roll core preprocess method of winding lithium battery diaphragm, includes the following steps：
A, it toasts：Paper roll core is put into baking oven and is toasted, baking temperature be 40~150 DEG C, baking time be 5~for 24 hours, institute
It states paper roll core to be placed on cart, facilitates and toasted in push-in baking oven, the cart further contains metal tube, the paper roll core
It is sleeved on metal tube；
B, cooling：Paper roll core after baking is taken out, and is used after being cooled to room temperature, cooling condition selection enclosure space into
Row, the enclosure space are unheated baking oven, it is cooling after the completion of for 24 hours within to use.
2. processing method according to claim 1, which is characterized in that in the step a, baking temperature is 50~70 DEG C.
3. processing method according to claim 1, which is characterized in that in the step a, baking time is 7~12h.
4. processing method according to claim 1, which is characterized in that be used within 12h after the completion of cooling.
5. processing method according to claim 1, which is characterized in that moisture ＜ 5% after the paper roll core baking.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856916.1A CN105336903B (en) | 2015-11-30 | 2015-11-30 | A kind of paper roll core preprocess method of winding lithium battery diaphragm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510856916.1A CN105336903B (en) | 2015-11-30 | 2015-11-30 | A kind of paper roll core preprocess method of winding lithium battery diaphragm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105336903A CN105336903A (en) | 2016-02-17 |
| CN105336903B true CN105336903B (en) | 2018-09-18 |
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|---|---|---|---|
| CN201510856916.1A Active CN105336903B (en) | 2015-11-30 | 2015-11-30 | A kind of paper roll core preprocess method of winding lithium battery diaphragm |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111584809B (en) * | 2020-04-30 | 2022-08-26 | 浙江金非新能源科技有限公司 | Slurry for lithium ion battery roll core and preparation method and gluing process thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559657A (en) * | 2009-05-18 | 2009-10-21 | 杭州可恩索华伦纸管有限公司 | Method for producing high-grade paper tube with seamless surface |
| CN202296609U (en) * | 2011-10-14 | 2012-07-04 | 新疆电力公司哈密电业局 | Blanket support for storing insulating blanket for live-line operation |
| CN202485350U (en) * | 2012-01-09 | 2012-10-10 | 杭州万丰纸业有限公司 | Drying room |
| CN102909896A (en) * | 2012-11-13 | 2013-02-06 | 吴江久升纸业有限公司 | Moisture-regaining resisting oven for paper tube |
| CN202953626U (en) * | 2012-10-25 | 2013-05-29 | 何朝文 | Seamless parchment paper tube |
-
2015
- 2015-11-30 CN CN201510856916.1A patent/CN105336903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101559657A (en) * | 2009-05-18 | 2009-10-21 | 杭州可恩索华伦纸管有限公司 | Method for producing high-grade paper tube with seamless surface |
| CN202296609U (en) * | 2011-10-14 | 2012-07-04 | 新疆电力公司哈密电业局 | Blanket support for storing insulating blanket for live-line operation |
| CN202485350U (en) * | 2012-01-09 | 2012-10-10 | 杭州万丰纸业有限公司 | Drying room |
| CN202953626U (en) * | 2012-10-25 | 2013-05-29 | 何朝文 | Seamless parchment paper tube |
| CN102909896A (en) * | 2012-11-13 | 2013-02-06 | 吴江久升纸业有限公司 | Moisture-regaining resisting oven for paper tube |
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| Publication number | Publication date |
|---|---|
| CN105336903A (en) | 2016-02-17 |
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